text: The European Food Safety Authority (EFSA) in 2016 reviewed the current evidence, finding the relationship between serum 25(OH)D concentration and musculoskeletal health outcomes is widely variable. They considered that average requirements and population reference intakes values for vitamin D cannot be derived, and that a serum 25(OH)D concentration of 50nmol/L was a suitable target value. For all people over the age of 1, including women who are pregnant or lactating, they set an adequate intake of 15μg/day (600IU).
  The EFSA reviewed safe levels of intake in 2012, setting the tolerable upper limit for adults at 100μg/day (4000IU), a similar conclusion as the IOM.
  The Swedish National Food Agency recommends a daily intake of 10μg (400IU) of vitamin D for children and adults up to 75 years, and 20μg (800IU) for adults 75 and older.
  Non-government organisations in Europe have made their own recommendations. The German Society for Nutrition recommends 20μg. The European Menopause and Andropause Society recommends postmenopausal women consume 15μg (600IU) until age 70, and 20μg (800IU) from age 71. This dose should be increased to 100μg (4,000IU) in some patients with very low vitamin D status or in case of co-morbid conditions.